update the text in R-146092

Proposed text:

 If one or more non-MANO artifact(s) is included in the VNF or PNF TOSCA CSAR
package, the Manifest file in this CSAR package *MUST* contain: non-MANO
artifact set which MAY contain following ONAP public tag

• onap_ves_events: contains VES registration files

• onap_pm_dictionary: contains the PM dictionary files

• onap_yang_modules: contains Yang module files for configurations

• onap_ansible_playbooks: contains any ansible_playbooks

• onap_others: contains any other informational artifacts